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การพิจารณาซื้อระบบกล้องวงจรปิด

2009-01-21T01:58:00.001-08:00

การพิจารณาซื้อระบบกล้องวงจรปิด
» ประเทศผู้ผลิต
ปัจจุบันสินค้าที่ผลิตในประเทศไต้หวัน เป็นที่ได้รับการยอมรับในด้านคุณภาพและราคา ทำให้เป็นที่นิยมในปัจจุบัน แต่สินค้าจากประเทศจีน ที่บริษัทต่างๆ นำเข้ามาขายจะเน้นราคาถูก ทำให้สินค้าไม่มีคุณภาพอายุการใช้งานสั้นมาก 3 เดือน - 2 ปี ทางที่ดี เน้นสินค้าที่ผลิตจากประเทศไต้หวันเป็นหลัก จะดีกว่า
» อุปกรณ์ที่ใช้
สินค้าหลักที่ใช้ในระบบกล้องวงจรปิดมี 2 รายการ คือ
กล้องวงจรปิด แบ่งเป็น 3 ชนิดหลักๆ คือ
1. กล้องแบบโดม
เหมาะสำหรับใช้ในอาคาร ที่แสงสว่างไม่เปลี่ยนแปลง ราคาถูก
2. กล้องแบบทรงเหลี่ยม (CS - MOUNT)
เหมาะสำหรับใช้ทั้งภายใน และภายนอก ต้องใช้คู่กับเลนส์ ซึ่งสามารถเปลี่ยนขนาดโฟกัสของเลนส์ได้ ทำให้ได้ภาพที่คมชัดตามพื้นที่ที่ต้องการ
3. กล้อง INFARED
เหมาะสำหรับใช้ทั้งภายในและภายนอก โดยเฉพาะพื้นที่ที่มืดสนิทในตอนกลางคืน เพราะมีหลอด INFARED ผลิตความถี่ให้เห็นในที่มืดสนิทได้
อุปกรณ์บันทึกภาพ ต้องพิจารณาคุณลักษณะหลักๆ คือ
1. ชนิดของอุปกรณ์บันทึกภาพ
แบบ PC BASE จะใช้ในโปรแกรม MS Office มีแบบเป็น CARD และแบบผลิตสำเร็จมาพร้อม Computer จะมีคุณสมบัติมากมายเหมือน Computer
แบบ STANDALONE เป็นแบบที่เป็นตัวเครื่องผลิตสำเร็จรูปมาจากโรงงาน มีคุณสมบัติครบถ้วนราคาถูก
2. ความเร็วของภาพที่ดูจากจอภาพ / ความเร็วในการบันทึกภาพ จะพิจารณาเป็น ความเร็วภาพ/วินาที (Frame) ถ้ามีความเร็วสูง ภาพจะดูต่อเนื่องแต่เปลือง Memory ใน Harddisk มาก
3. มาตรฐานในการบีบอัด (Compression) ของภาพมาตรฐานที่เป็นที่นิยมกันหลักๆ มีดังนี้ MPEG4 , MJPEG และ H.264 MPEG4 เป็นที่นิยมสูงสุด เพราะใช้พื้นที่ในการบันทึกน้อย
4. การดูภาพผ่าน Internet / Lan ควรจะสามารถดูผ่าน Internet / Lan ได้
การรับประกันสินค้า จะต้องขอเอกสาร เงื่อนไข การรับประกัน สินค้าจากบริษัทที่จำหน่าย เพื่อเก็บไว้เป็นหลักฐาน
การติดตั้ง มีความสำคัญมากไม่น้อยกว่าการเลือกสินค้า สายที่ใช้ในการติดตั้งมี 2 ชนิดคือ
1. สายไฟฟ้า จะต้องใช้สายที่ได้มาตรฐาน มอก. ระวังผู้ขายที่ขาดความรับผิดชอบจะใช้สายโทรศัพท์แทนสายไฟฟ้า ซึ่งจะทำให้สายร้อนและเกิดอัคคีภัยได้
2. สายสัญญาณใช้สาย RG6 ที่ได้มาตรฐาน โดยจะต้องใช้สาย SHIELD 90% ขึ้นไป ควรจะใช้ยี่ห้อ มาตรฐาน เพราะถ้าใช้สายถูก ราคาเมตรละ 5 - 8 บาท จะ SHIELD ต่ำ 60% จะใช้งานได้ไม่นาน ภาพของกล้องจะเกิดสัญญาณรบกวน ต้องเดินสายใหม่ทั้งหมด งานติดตั้งจะต้องตรวจสายที่ติดตั้งจริงก่อนชำระการติดตั้ง การติดตั้งสำคัญมาก ถ้าต้องรื้อและเดินสายใหม่จะเป็นเรื่องใหญ่มาก
การเลือกบริษัทที่จำหน่าย
ปัจจุบันธุรกิจกล้องวงจรปิดบูมมากทำให้บริษัทขายกล้องวงจรปิดเกิดมาก ทำให้มีการแข่งขันสูง มีผู้ขายบางรายหลอกลวงลูกค้า บางรายปิดกิจการไป โดยมีปัญหาต่างๆ พอสรุปดังนี้
1. นำสินค้าที่ไม่ได้มาตรฐาน มาจำหน่าย โดยเฉพาะสินค้าจากประเทศจีน ปัจจุบันสินค้าจีนที่มี คุณภาพดีมีจำนวนมากแต่ราคาจะใกล้เคียงสินค้าจากประเทศไต้หวันบางครั้งมีการแอบอ้างว่าผลิต ในประเทศไต้หวัน แต่เป็นสินค้าคุณภาพต่ำจากประเทศจีน ส่วนใหญ่ลูกค้าที่พิจารณาแต่ราคาจะประสบปัญหา ซื้อไปแล้วใช้ไม่ได้นาน สินค้าจะชำรุดเร็วมาก
2. ผู้ขายไม่บริการหรือบริการช้ามาก เนื่องจากผู้ขายไม่ได้นำเจ้าโดยตรง หรือผู้นำเข้าเลิกกิจการ จะต้องพิจารณาความมั่นคงของผู้ขาย กรือผู้นำเข้าเป็นสำคัญ
3. การติดตั้งที่ไม่ได้มาตรฐาน ใช้สายไฟและสายสัญญาณ ที่ไม่ได้มาตรฐานมาติดตั้ง ทำให้ภาพที่ปรากฏไม่ชัดเจน หรือใช้ได้ไม่นาน ภาพก็ไม่ชัดรวมถึงการไม่รับผิดชอบเกี่ยวกับ การติดตั้ง ควรระวังเรื่องการติดตั้งเป็นเรื่องสำคัญมาก
สรุป
เลือกซื้อสินค้าที่มีคุณภาพดี ในราคามาตรฐานพิจารณาชนิด ประเภทของสายที่ใช้ในการติดตั้งอย่างละเอียด ซื้อสินค้า จากบริษัทที่น่าเชื่อถือเป็นมืออาชีพ เป็นผู้นำเข้าหรือตัวแทนของผู้นำเข้าที่ได้รับมาตรฐานรับรอง อาทิ บริษัทที่ได้รับรองมาตรฐาน ISO 9001 : 2000 รวมถึงอายุการรับประกันสินค้าถ้านาน จะเป็นหลักประกันในการให้บริการ
สุดท้ายนี้ ควรไปชมการสาธิตสินค้าที่บริษัทผู้ขาย เพื่อจะได้เห็นคุณภาพสินค้าด้วยตาของเราเอง อีกทั้งจะได้เห็น กิจการของผู้ขายว่ามีความมั่นคง และมีบุคคลากร พร้อมที่จะให้บริการแก่ท่านหรือไม่ เพราะว่าเราควรจะใช้กล้องวงจรปิด ให้มีอายุการใช้งานอย่างน้อย 5 ปี

กล้องวงจรปิด (CCTV) คืออะไร

2009-01-21T01:53:00.000-08:00

กล้องวงจรปิด (CCTV) ย่อมาจาก Closed-circuit television ซึ่งจะทำหน้าที่รับภาพที่ปรากฏอยู่ และทำการแปลงเป็นสัญญาณ และทำการส่งสัญญาณดังกล่าวไปในจุดที่ต้องการในลักษณะ point to point ซึ่งตัวรับภาพของกล้องวงจรปิดนั้น แบ่งได้เป็น 2 แบบ1. CMOS (ซีมอส) ซึ่งจะใช้กับกล้องวงจรปิดที่มีราคาถูก คุณภาพต่ำ2. CCD (ซีซีดี) จะใช้กับกล้องวงจรปิดที่มีคุณภาพปานกลาง-สูง ซึ่งในกล้องวงจรปิดในปัจจุบันนี้ได้เลือกใช้ CCD Sensor ทั้งหมดแล้ว เนื่องจากราคาของ CCDSensor ได้ลดลงมากแล้ว ซึ่งหากแบ่งตามรูปทรงการใช้งานนั้น จะสามารถแบ่งได้หลัก ๆ ดังนี้

1.กล้องวงจรปิดแบบโดม (Dome CCTV) ซึ่งก็มีทั้งแบบ indoor , outdoor ซึ่งเหมาะสมติดตั้งในจุดที่ต้องการความเรียบร้อยและสวยงาม เนื่องจากจะดูกลมกลืน
2.กล้องวงจรปิดแบบ C/CS Mount (C/CS Mount CCTV) ซึ่งมีแบบ indoor เท่านั้น โดยสามารถติดตั้งในกล่องกันฝน เพื่อใช้งาน outdoorได้เช่นกัน และกล้องวงจรปิดชนิดนี้สามารถเปลี่ยน Lens เพื่อให้เหมาะสมกับการใช้งานได้หลากหลาย เช่น เลนส์มุนกว้าง , มุมแคบ , ชนิดปรับแสงอัตโนมัติ(auto iris)

3.กล้องวงจรปิดแบบอินฟราเรด (infrared CCTV) ซึ่งมีทั้งแบบ indoor , outdoor โดยจะทำในหลายรูปแบบ เช่น infrared dome CCTV , Built-in Lens infrared CCTV โดยกล้องวงจรปิดแบบนี้มีจุดเด่นที่สามารถรับภาพได้แม้ในที่มืดสนิท (0 Lux)

IP Camera คืออะไร ?

2009-01-21T01:47:00.000-08:00

IP Camera มันก็คือกล้อง CCTV ที่รวมความสามารถของคอมพิวเตอร์ไว้ในตัวกล้อง เป็นหนึ่งเดียวกัน กล้องไอพี จะเก็บภาพสถานการณ์สดๆ และยิงผ่านไปบน ระบบเครือข่าย IP และอนุญาติให้ผู้ใช้สามารถมองเห็นเหตุการณ์ จากระยะไกล และสามารถจัดเก็บภาพเหตุการณ์นั้น รวมถึงการควบคุมหรือเซ็ตกล้องผ่านทางระบบ IP ได้IP Camera จะมี IP Address เป็นของตัวเอง (ค่า Default 192.168.0.99) ให้เราคิดว่า IP Address ก็เหมือนกับบ้านเลขที่ของเรา มันทำให้ใครต่อใครรู้ว่าเราอยู่ที่ไหน ซึ่งก็เหมือนกับในกรณีของ IP Address ผู้ใช้แค่ทราบ ข้อมูล IP ของกล้องเท่านั้นก็สามารถเรียกดู ข้อมูลภาพจากกล้องได้โดยแค่พิมพ์ IP Address ของกล้องไปบน Intrenet ExplorerIP Camera ไม่จำเป็นต้องต่อกับคอมพิวเตอร์อยู่ตลอดเวลา (ซึ่งจะต่างจากเว็บแคม เพราะมันจำเป็นต้องต่อกับ คอมพิวเตอร์) มันสามารถทำงานได้ด้วยตัวของมันเอง และสามารถที่จะเอาไปติดตั้งที่ไหนก็ได้ ที่มีระบบ Network ที่มากไปกว่านั้นก็คือ กล้อง IP Camera ยังมีฟังก์ชั่นเพิ่มเติมการทำงานอื่นๆ อีกมากมายเช่น
1. ฟังก์ชั่นตรวจวัดการเคลื่อนไหว หากพบว่ามีสิ่งผิดปกติมันจะถ่ายภาพเก็บไว้หรือไม่ก็ alarm เตือน หรือส่ง mail ไปยังผู้ดูแล
2. ฟังก็ชั่นเสียง กล้อง IP Camera ยังมีความสามารถที่จะส่งข้อมูลภาพและเสียงได้พร้อมกัน (บางรุ่นไม่ Support)
3. ฟังก์ชั่น Input และ Output ซึ่งถือว่าเป็นฟังก์ชั่นอรรถประโยชน์ ผู้ใช้สามารถประยุกต์ได้หลายแบบ
4. ฟังก์ชั่น Serial Port สำหรับผู้ใช้ที่ต้องการจะเอากล้องไปติดกับตัวคอนโทรล Pan/Tilt

CCTV Frequently Asked Questions

2008-11-24T00:21:00.000-08:00

1. What is CCTV?
CCTV (Closed Circuit Television) is a visual surveillance technology designed for monitoring a variety of environments and activities. CCTV systems typically involve a fixed (or "dedicated") communications link between cameras and monitors.
In the past decade, the use of CCTV has grown to unprecedented levels. In Britain between 150 and 300 million pounds (225 - 450 million dollars) per year is now spent on a surveillance industry involving an estimated 300,000 cameras Most British towns and cities are moving to CCTV surveillance of public areas, housing estates, car parks and public facilities. Growth in the market is estimated at fifteen to twenty per cent annually. 1
Many Central Business Districts in Britain are now covered by surveillance camera systems involving a linked system of cameras with full pan, tilt, zoom and infrared capacity. Their use on private property is also becoming popular. Increasingly, police and local councils are placing camera systems into housing estates and red light districts. Residents Associations are independently organizing their own surveillance initiatives. Tens of thousands of cameras operate in public places,; in phone booths, vending machines, buses, trains, taxis, alongside motorways and inside Automatic Teller (Cash) Machines.
The video surveillance boom is likely to extend even inside the home. Andrew May, Assistant Chief Constable of South Wales, has urged victims of domestic violence to conceal video cameras in their homes to collect evidence. The technology is already being used in hospitals to support covert surveillance of parents suspected of abusing their children.
The limits of CCTV are constantly extended. Originally installed to deter burglary, assault and car theft, in practice most camera systems have been used to combat 'anti-social behavior', including many such minor offenses as littering, urinating in public, traffic violations, obstruction, drunkenness, and evading meters in town parking lots. They have also been widely used to intervene in other 'undesirable' behavior such as underage smoking and a variety of public order transgressions. Other innovative uses are constantly being discovered. 2 When combined with observation of body language, the cameras are particularly effective in detecting people using marijuana and other substances. These systems are used increasingly to police public morals and public order. According to a glossy UK Home Office promotional booklet, "CCTV : Looking out for you", the technology can be a solution for such problems as vandalism, drug use, drunkenness, racial harassment, sexual harassment, loitering and disorderly behavior. 3
CCTV is very quickly becoming an integral part of crime control policy, social control theory and 'Community consciousness'. It is promoted by police and politicians as primary solution for urban dysfunction. It is no exaggeration to conclude that the technology has had more of an impact on the evolution of law enforcement policy than just about any technology initiative in the past two decades.
CCTV is a seductive technology. In a public policy domain which is notoriously rubbery, CCTV has a solid, "Sexy" and powerful image. It has become an icon for security and - for politicians - its promotion is guaranteed to create a feel-good response. When people are frightened of crime and criminals, critics of CCTV are often portrayed as enemies of the public interest.
While Britain is clearly the lead nation in implementing CCTV, other countries are quickly following. North America, Australia and some European countries are installing the cameras in urban environments which a few years ago would most likely have rejected the technology.

2. What sort of technology is used in CCTV systems?
The modern CCTV system involves a linked system of cameras with full pan, tilt, and zoom able to be operated remotely from a control room.
These systems may involve sophisticated technology. Features can include night vision, computer assisted operation, and motion detection facilities which allows the operator to instruct the system to go on red alert when anything moves in view of the cameras. Camera systems increasingly employ bullet-proof casing, and automated self defense mechanisms which - as with the Liverpool system - ensure that cameras under attack are covered by neighboring cameras These can be legitimately described as military style systems.
The clarity of the pictures is often excellent, with many systems being able to recognize a cigarette packet at a hundred metres. The systems can often work in pitch blackness, bringing images up to daylight level.

3. Can CCTV reduce crime?
Glowing reports of the effectiveness of CCTV are announced regularly. Strathclyde police in Scotland recently claimed a 75 per cent drop in crime following the installation of a £130,000 closed circuit TV system in Airdrie. Not only are people delighted because they are no longer afraid to go out shopping, say local police, but even criminals welcome the chance to prove their innocence by calling on evidence from the cameras. In King's Lynn, burglary and vandalism in the industrial estate has dropped to a tiny fraction of its original level. Crime in car parks has dropped by ninety per cent. People say they feel safer. Indeed they should. Assaults and other violent crimes appear also to have been decimated in the center of town.
The government believes this is because CCTV deters 'opportunistic' crime, where people take advantage of a situation on the spur of the moment. Phillip Edwards from the Home Office Crime Prevention Unit says the government is using CCTV as part of a long term plan to reduce overall crime. "Today's opportunist is tomorrow's professional criminal. If we decrease the number of opportunities for easy crime, we can reduce the number of people becoming professional criminals".
The logic, and the statistics, are superficially impressive, but some analysts are not convinced. In a report to the Scottish Office on the impact of CCTV, Jason Ditton, Director of the Scottish Centre for Criminology, argued that many claims of crime reduction are little more than fantasy. "All (evaluations and statistics) we have seen so far are wholly unreliable", The British Journal of Criminology went further by describing the statistics as "....post hoc shoestring efforts by the untrained and self interested practitioner ". 4
The crime reduction claims being made by CCTV proponents are not convincing. Three recent criminological reports (Home Office, Scottish Office and Southbank University) have discredited the conventional wisdom about the cameras effectiveness. In a report to the Scottish Office on the impact of CCTV, Jason Ditton, Director of the Scottish Centre for Criminology, argued that the claims of crime reduction are little more than fantasy. "All (evaluations and statistics) we have seen so far are wholly unreliable", The British Journal of Criminology described the statistics as "....post hoc shoestring efforts by the untrained and self interested practitioner." In short, the crime statistics are without credibility.
The crime statistics rarely, if ever, reflect the hypothesis that CCTV merely displaces criminal activity to areas outside the range of the cameras. One of the features of current surveillance practice is that the cameras are often installed in high-rent commercial areas. Crime may be merely pushed from high value commercial areas into low rent residential areas. Councils often find that it is impossible to resist demands for such systems. There is an additional element of displacement that should be of particularly concern to all communities. Since the growth of CCTV as the primary means of crime prevention, more traditional, community based measures have been discarded.
A Scottish Centre for Criminology report on CCTV in Airdre was unable to rule out displacement as a factor. 5 while various studies in other countries indicate that burglars and other criminals will travel long distances to commit crimes. 6 Discussing the justification for establishing a surveillance system of 16 cameras in Manchester, Gordon Conquest, chairman of the city centre sub committee of Manchester Council, candidly admitted "No crackdown on crime does more than displace it, and that's the best we can do at the moment." 7
The Crime Prevention Unit of the Home Office appears to agree. In 1993 it suppressed the findings of a survey on the crime impact of camera surveillance on the basis that the displacement effect had been all but ignored. In other words, crime may be merely pushed from high value commercial areas into low rent residential areas. One of the features of current surveillance practice is that the cameras are often installed in high-rent commercial areas. Councils often find that it is impossible to resist demands for such systems. The trend is fueled in part by the insurance industry, which in some towns is offering a thirty per cent reduction in premiums to local retailers who pay a contribution to a CCTV levy system. A nationwide insurance discount scheme is currently being negotiated, and should be in place by 1996.
Some police also concede that CCTV displaces crime. Richard Thomas, Acting Deputy Chief Constable for Gwent, recently told the BBC's Andrew Neil that he believed CCTV pushed some crime beyond the range of the cameras. 8 And in his interview with 20/20, Leslie Sharp said "Certainly the crime goes somewhere. I don't believe that just because you've got cameras in a city center that everyone says 'Oh well, we're going to give up crime and get a job".
The cameras are also creating a vastly increased rate of conviction after crimes are detected. Virtually everyone caught committing an offense on camera pleads guilty nowadays. Once people know they have been videotaped, they admit the offense immediately. Such is also the case in Newcastle, where the installation in 1992 of a 16 camera system has resulted in a 100 per cent incidence of guilty pleas. 9 Police are delighted at the time and money they are saving from long and expensive trials. Some legal experts are a little more wary of the implications of these results, arguing that - like DNA evidence - juries can be seduced and defendants intimidated in equal proportions by evidence that might not normally stand up to scrutiny. Indeed some districts are now reporting that people are surrendering after the mere mention in newspaper reports that their alleged activities had been captured on CCTV. 10

4. What does the public think of CCTV?
The picture is mixed. While proponents of CCTV are inclined to describe opposition to the technology as marginal, the reality is much less conclusive. In one survey commissioned by the UK Home Office a large proportion of respondents expressed concern about several key aspects of visual surveillance.
The extent of concern was highlighted by the outcome that more than fifty per cent of people felt neither government nor private security firms should be allowed to make decisions to allow the installation of CCTV in public places. 72 per cent agreed "these cameras could easily be abused and used by the wrong people". 39 per cent felt that people who are in control of these systems cold not be "completely trusted to use them only for the public good". 37 per cent felt that "in the future, cameras will be used by the government to control people". While this response could be interpreted a number of ways, it goes to the heart of the privacy and civil rights dilemma. More than one respondent in ten believed that CCTV cameras should be banned. 11
Another interesting conclusion of the Home Office survey was that 36 per cent of respondents did not agree with the proposition "the more of these cameras we have, the better". Contrast this with the view of Leslie Sharp, chief constable for the Scotland's Strathclyde Police Department. Referring to his forces mania for CCTV he told ABC news' 20/20 program "We will gradually drive the criminal further and further away, and eventually I hope to drive them into the sea". 12
The most crucial element of the Home Office survey was the conclusion that the public were less inclined to unconditionally support CCTV once issues were raised and discussed within groups.
FOOTNOTES
1. Davies, S (1996) Big Brother : Britain's web of surveillance and the new technological order, Pan Books, London, p. 183.
2. ibid p. 177.
3. CCTV, Looking out for you, Home Office, London, 1994 p 12.
4. cited in Davies, S (1996) Big Brother.
5. Ditton, J (1996) Does Closed Circuit Television Prevent Crime? Scottish Centre for Criminology, HSO Edinburgh.
6. Gabor, T (1978) "Crime displacement The literature and strategies for its investigation", Crime and Justice, Vol 6 no. 2 p.105.
7. City life, July 27 1994.
8. Andrew Neil Show, BBC TV, 29 May 1996.
9. ibid p. 11.
10. Dawson T, "Fraing the villains", New Statesman, 28 January 1994.
11. Honess T, and Charman E (1992) ; "Closed Circuit Television in public places" Crime Prevention Unit paper no. 35 London HMSO.
12. ABC News, 20/20, September 7, 1995.

Home Cctv Security Information

2008-10-12T14:31:00.002-07:00

Residential security today and DIY video surveillance is a huge industry.Residential home owners and small commercial enterprises are discovering the benefits and serenity that CCTV systems can provide.Advances in technology has resulted in making home alarm systems affordable for all people.Great reductions in the crime rate have been verified by statistics where CCTV camera have been installed. An article in 'New Scientist' magazine showed that simply installing a home security CCTV system can reduce crime by over 95%.Customers have told us that they are experiencing the same results in a variety of businesses; soon you will start to realize why CCTV is viewed by most as the most important system for deterring and preventing home invasions.Crooks are simply less likely to attack a property with some sort of security deterrent, especially a security camera.Welcome to our site we stride to eliminate the senseless technical bable and advise you on the simple facts,best tips and the most significant decisions that you will have to make upon choosing the right residential security CCTV system most suited for you and your family.Here you will learn the best configuration for your home security CCTV environment and we will explain it in half the time it takes the competition too!This really is great, free, quick and easy advice which you wont find anywhere else without having to spend a chunk of money!So lets get started!IP or traditional cameras?The IP home security CCTV market is developing rapidly but is an extremely costly route. For the home market the traditional cameras are perfect with an unlimited life span and much easier on the bank balance!Wired or Wireless?Is your property conducive to running wires around your residence for your home alarm CCTV system or will you need a wireless system? Remember even if it is wireless, you will still need power for the camera from a local power supply.Also there are possible interference problems when going down the wireless route.Do I need infrared?If you want to see clearly in black and white at night then yes you should opt for a camera that has infrared. Camerera not utilizing it will only be good during hours of daylight.CAT5 cables or Coaxial?You can run the traditional Coaxial cable to power and process the signal to the cameras throughout your home security CCTV setup.Since transformers are necessary to energize each camera device,we always suggest that Category 5 cable be installed with small hi tech converters which eliminate all the power supply difficulties!Indoor cameras or outdoors?Outside gets a little more expensive but the small additional costs are worth covering your external entry points to the premises. The deterrent factor alone is a worthwhile bonus from installing external cameras.What DVR?This is basically the unit that records all the footage from the cameras that you can view at any time.How much do you need to record? 30 days non stop? Less or more you need to decide to make your choice capacity wise on what size of Hard Drive you will need to buy to run in the DVR.Constant recording or motion detection?Do you want to see everything the cameras see throughout the day and night or would you prefer them to be set on motion detection so they record only what moves past them. Motion detection allows for greatly increased recording capacity on the DVR.For example if the your front door camera was set up correctly with the motion detection setting, you would only see who had come to your front door throughout the day with out having to manually wind the DVR forward.How do I backup my Footage?Recordings which are 30 days old can be taped over or if you desire back them up to USB,CD or network PC. These choices will all affect the budget for your home security CCTV system.

Making the Right Choice While Looking for Cctv Security Camera

2008-10-12T14:31:00.001-07:00

There are normally six things to look at before Selecting a CCTV security systems;1. Camera Selection2. Recording Options3. Detection4. Time and Date Stamping5. Cable and Connectors6. Camera Protection1.0 Camera Selection1.1 LocationIs the camera to be located indoors or outdoors? If outdoors then you need to ensure that it is appropriate for the environmental conditions that are likely to be encountered such as rain, snow, sun-glare, low light etc. Outdoor CCTV camera security systems Outdoor cameras should either be classed as weather resistant or mounted in a special enclosure to provide protection. All CCTV outdoor cameras provided by Voltek are weather resistant and the cable entry points are sealed. The leads are of sufficient length to enable connections to be made inside the building.1.2 Light LevelsChoosing the right camera based on the amount of available light is very important for an effective security system. An ordinary colour or even monochrome camera will not give very good pictures in low light conditions although the monochrome will perform better than an equivalent colour one. Solutions available for low light conditions can include:* B&W cameras with built in IR illumination* Colour Day / Night cameras* Use of additional security lighting* Use of a separate IR illuminator in conjunction with a monochrome camera. When using IR illumination ensure that the range of the illuminators is adequate for your needs. Light levels are usually measured in lux and although full daylight can be around 10,000 lux, dusk can be as low as 1-10 lux, complete darkness is 0 lux and side street lighting can also be less than 1 lux in some cases. The closer a camera is rated to 0 lux the better its performance in low light levels.1.3 Colour, Black and White or Day Night CamerasB&W cameras generally provide better image quality than colour ones at lower light levels. They are also usually cheaper than colour ones of equivalent specification. Colour cameras require the availability of good lighting and will generally provide better recognition capability. Day Night cameras provide the best of both worlds in an external environment. They operate as colour cameras during the day (or in good light conditions) and automatically change to B&W when the light levels drop. All Voltek Day Night cameras are supplied with built-in Infra-red illuminators which enable the cameras to see in darkness.1.4 Wired or WirelessWireless CCTV cameras are easier to install. There is no cabling to run from the camera to the receiver and they are ideal for temporary applications, rapid deployment or where running cable is not desirable. TheDay Night wireless Security CCTV cameras cameras do however require a power source and whilst most will have the capability to be powered by batteries these do not have a very long life - a matter of hours in some cases. Wherever possible the cameras should be powered by the mains. Typical range for wireless camera systems is 100m free-space but this can reduce significantly to around 20 meters in a typical household environment. In some cases there is also the potential for interference when using wireless systems.1.5 Visible Deterrence or Covert / Discreet MonitoringFor visible deterrence the use of larger cameras housed in traditional enclosures are ideal. For covert or discreet applications Voltek supplies Discreet or Covert CCTV security cameras that are:* Very small and can be installed in covert locations, or* In enclosures designed to disguise the presence of a camera.Many of the cameras manufactured by Voltek are both stylish and discreet in the design of their enclosures and this makes them very suitable for domestic applications.1.6 AudioIf the ability to monitor or record sound is important then the camera needs to have a built-in microphone. This enables one-way audio monitoring. Some cameras such as the SuperCam2 from Voltek have a 2-way speech facility that enables you to speak with your visitor without answering the door.1.7 Camera Viewing QualityThe resolution, size and type of camera sensor will influence the quality of the viewable image.Resolution – This is expressed as the number of television lines (TVL) that the camera is capable of producing. The higher the TVL value the greater the resolution and hence the quality of the images. A typical entry-level camera will be around 300 TVL with higher resolution cameras having a value of 400+ TVL.Size – A larger image sensor will give a better image definition than a smaller sensor. For example, a 1/3” image sensor will produce a better image than a 1/4 ” sensor.Type – There are 2 types of image sensor. CMOS sensors are mass-produced and used in entry-level cameras to provide cost savings. CCD sensors are used in professional CCTV cameras and provide a higher quality image.It is important to remember that the quality of the recorder also influences the quality of the CCTV footage. For example, if you use a high-resolution camera but a low-resolution recorder then the CCTV footage that is captured will still be of low resolution.1.8 Single Camera or Multiple Camera SystemsDo you need to protect and view a single area or multiple areas? If you are likely to require protection of additional areas at a future date then consider buying a system that can be expanded as and when required. Voltek has a range of products that will allow you to connect and use up to 4, 8 or even 16 cameras. These include:Switchers - These are units that enable a multi-camera system to switch between the various cameras. The switching can be done in a number of ways:* Manually by the user* Automatic sequential switching between cameras* Upon detection of movement by a PIR camera.Multiple Security CCTV cameras with Switchers The cameras are connected to the switcher and the output from the switcher can be viewed on a TV or it can be connected directly to the recording device such as the VCR or DVD recorder. CCTV switchers can typically allow connection of upto 4 or 8 cameras. The Spectrum control units from Voltek also have additional built-in functionality such as automatic video activation and time and date stamp. It is important to remember however that using a switcher will only allow you to view and record one camera at a time.Standalone DVRs - Use of digital video recorders allows single or multi-camera systems to be viewed and / or recorded simultaneously.Voltek supplies a range of 4, 8 and 16 channel DVRs allowing you to install a very comprehensive cctv system.PC-Based Security Systems - These make use of a PCI card that is fitted inside your computer. They will allow connection of upto 4, 8 or 16 cameras and help turn your existing PC into a sophisticated cctv system.2.0 Recording OptionsIf you want to be able to record your CCTV footage then the following factors need to be taken into account:* Maximum length of recording time required* Quality of recording* Method of recording:o Continuouso Manualo Event Led - i.e. when your system detects motion * Recording Equipmento Analogueo Digital * Capability for storage, retrieval and transfer of cctv footage2.1 Domestic VCRThis is a simple and low cost option that can provide good quality footage recorded in real time. VCRs can be used to provide continuous recording of up-to 8 hours or event led recording when used in conjunction with a PIR camera and a VCR activator. When using PIR cameras to carry out event led recordings you need to consider the start-up time for the VCR. For example, if the recorder takes a few seconds to actually begin recording each time it receives the signal from the camera then the event may have elapsed before it is recorded (a person walking across the camera range may have passed the field of view before the image is captured on tape). In these situations a separate PIR detector could be used to trigger the recording and overcome this problem. The other thing to bear in mind is that you cannot set the VCR to record a TV channel whilst the camera input is selected.2.2 Domestic DVD RecorderThese operate on a similar principle to the domestic VCR but offer the additional benefits of:* Higher quality digital recording* Increased storage capacity* Improved search and retrieval capability However, for disk only recorders the start-up time before recording actually commences is generally longer than a VCR. To overcome this it is recommended that recorders with a built-in hard drive are used2.3 Standalone Digital Video RecordersThese are rapidly becoming the most popular method of recording CCTV footage. Essentially a DVR is a standalone piece of hardware that is designed exclusively for recording CCTV footage. It has a number ofDigital Security camera recorders clear advantages over the traditional analogue systems and these include:* Storage Capacity – Days, weeks and even months of high resolution recording is possible through use of large capacity hard drives* Consistent Quality Recording – No deterioration of image quality no matter how many you overwrite onto the recording device or how long you store the images for* Viewing and Retrieval – Quick and easy access of footage due to digital format* Transfer and Storage – The digital format allows ease of transfer and storage of footage. Transfer and storage capability is further enhanced by DVRs with built-in CD writers and USB ports.* Remote Access – Many DVRs have the capability for remote access from anywhere in the world through use of a remote PC* Multiplexed Recording – Capability to view and record multiple cameras simultaneously. 2.4 PCI CardsThese are digital video capture cards that can be fitted inside your existing PC to allow the connection of multiple CCTV cameras. The functionality and benefits of PCI cards is very similar to that of DVRs.3.0 DetectionEven with systems that have a very long recording capacity, it is not always desirable to record continuously. Event-led recording is a more efficient means of capturing relevant footage and can be achieved by:3.1 PIR Movement DetectorsSome cameras have PIR detectors built-in and for those that don’t it is possible to install a separate PIR as part of the overall system. In multiple camera systems with PIRs the footage that is being displayed on screen will automatically change to the area that has detected movement.3.2 Video Motion DetectionThis is used in digital CCTV systems and works by analysing the video signal from a camera. Changes in signal are recognised as movement and subsequently used to trigger recording if required. All Voltek digital systems allow users to mark one or more rectangular areas within the display screen and only when motion is detected within these areas will the system begin recording. Where possible, use of PIR movement detection is preferable rather than video motion detection, as it more reliable particularly for external use.4.0 Time and Date StampingThis feature superimposes the time and date onto your CCTV footage. Having this feature can be really useful to identify when an event occurred and was recorded, particularly if the footage is to be used for evidence purposes. For domestic systems Voltek offers a separate time and date generator that can be added to your system. The Spectrum control CCTV securyty cameras has this facility already built-in. The facility is also integral to all the Voltek range of digital CCTV systems.5.0 Cable and ConnectorsSecurity camera wires connectors Cameras can be connected in a variety of ways. All our domestic cameras are supplied with 20m of cable and scart and / or phono plugs to connect directly into your TV, VCR or DVD recorder. All our professional cameras are supplied with 20m of cable and BNC connectors that will plug into our range of digital recorders. The Voltek camera leads can be extended upto 100m in total by the use of appropriate extension leads. Co-axial cable with a local power supply to the camera can enable the camera to be sited upto 250m away from the monitor or recording device. Detailed information on connectors and cable for each of the Voltek cameras is available on the relevant product page on the website.6.0 Camera ProtectionIf your camera is likely to be a target for vandals then consider protecting it with one of Voltel wire cages is a Security camera wire cagesmust. This not only saves your Security cameras from Vandalas but protects any evidences collected during the vandal acts.We at For your Home along with Voltek really hope the following guide will help you in selecting the perfect security cameras for Your Homes and Gardens

How Can a Cctv Security System Help?

2008-10-12T14:30:00.002-07:00

One of the most frequently asked questions about the CCTV system is that inquiring upon its nature. CCTV, short for Closed Circuit Television, is a surveillance technology which monitors a wide range of activities and environments. The CCTV system is based on a communication link between a camera and a specific monitor. Many towns and cities resort to CCTV security systems, which has led to an unprecedented growth in the amount of money spent on surveillance systems. CCTV security systems are now used in public areas such as city centers, parking lots, public facilities, buses, taxis, phone booths etc. Actually, statistics say that the surveillance industry grows with up to twenty percent every year. CCTV security systems are also installed on private property, not just public places.Evidence of domestic violence can be collected by means of a CCTV system, installing a camera inside the victims’ homes. A similar type of surveillance is used inside hospitals in cases of supposedly abused children, in order to monitor their parents’ activities and behavior. In the early stages, CCTV security systems were used to decrease crime rate such as burglaries or car thefts. More recently, CCTV systems pick up on more minor offenses such as urinating in public, drunkenness, traffic violation. Those who evade the meters in a parking lot can also be caught on camera. Underage smoking, sexual or racial harassment, drug use, all of these crimes are the subject of CCTV system monitoring. Public order is now more likely to be kept with the use of CCTV security systems, which have become the solution to the serious problem that is urban dysfunction. But the police are not the only promoters of security through CCTV systems. Politicians also encourage installation of such systems in order to control crime. The CCTV system also has its opponents, but whenever these critics speak up, people who are frightened by crime consider them to be nothing but enemies of everyone’s best interest. As far as the technology used in a CCTV system goes, it suffices to say that some of these systems can be very sophisticated. They can be assisted by a computer, can detect motion, can have night vision and images of excellent clarity. Another amazing thing about the cameras on a CCTV security system is that they can focus on a single object from a crowded environment and follow that one object. They provide high definition images from which faces can be recognized. The time needed for a system to identify one face out of several thousands is less than a second. The system is mostly used in airports where terrorists may enter a country.Since the CCTV cameras have often become targets of attacks, more and more of them now have a casing which is bullet proof, or are covered by other cameras installed nearby. The question still remains whether CCTV security systems reduce crime. The answer is that they are most likely to prevent it. Those in favor of such surveillance systems have at least one argument. CCTV systems reduce the number of the so-called opportunistic crimes, that is the crimes committed when people decide to take advantage of a certain situation. In the same way, crimes in parking lots have reportedly dropped by almost ninety percent.The conclusion is that, although CCTV security systems may not be as efficient as their supporters portray them, at least they appeal to common people, who now feel much safer when going shopping, for instance.

Ensure Safety With Cctv Security Systems

2008-10-12T14:30:00.001-07:00

In this day and age, you can't be too complacent about the safety of your own home. Crime abounds everywhere, and even the seemingly safest areas are not spared. Crime prevention is a near impossible feat. However, crime detection leading to prosecution is not, thanks to CCTV security systems.CCTV Surveillance DefinedHaving a CCTV security system for video surveillance and live monitoring purposes is like having an entire television network devoted to the safety of your home. CCTV security systems may comprise of a single or a group of surveillance cameras on a private in-home network. They can be linked to an observation monitor with well-placed cables or even wirelessly. CCTV security systems are commonly used in areas in need of high-security, such as banks, casinos, and airports. But because CCTV security systems are relatively inexpensive and simple to use, they are now being used in private homes to bolster homeowners' peace of mind. CCTV Surveillance vs. CrimeCCTV security systems rapidly gained popularity as an aftermath of the terrorist attacks on London's public transport system. Surveillance videos identified the men responsible for the attacks, leading to their capture and eventual prosecution. This proves that a CCTV security system is an effective tool for crime detection and can provide solid evidence. Furthermore, with constant vigilance, a CCTV security system is a powerful deterrent and may even stop crime before it actually happens. CCTV Cameras and Your HomeCCTV security cameras are simple enough to be used at home. They can take images with resolutions as high as 1600 x 1200 pixels on a time lapse or motion detection basis, depending on your setup. Some CCTV security systems have add-on features like tilt-zoom, low light, and infrared. CCTV security cameras are relatively inexpensive. Prices vary, depending on factors such as size, type, display, resolution, zoom, and connection. CCTV security cameras are commonly available as domes, bullets, and standard c-mounts. They are available in black and white or colored, with audio or without audio. With a good setup, CCTV security systems can monitor up to 16 rooms and areas in your home, all the while providing clear and highly visible images. You can monitor your garage, your kitchen, your front yard, and even your mailbox. CCTV security systems are able to record suspicious activities real-time. The cameras subsequently transfer the captured images to a PC or laptop through a USB, coaxial cable, or a wireless adapter. Study your needs before you install your CCTV security system. Consider the area that you want covered, as well as consider future expansion. If installed outdoors, invest in specialized weatherproof housings and proper protection from vandals. Lighting is also an important thing to consider. The absence of proper lighting will produce muddy pictures that could end up being useless. Lastly, ensure that you have a stable power source and power supply. CCTV Surveillance and the LawVideo surveillance is subject to privacy laws. Your home is your private domain and you have every right to protect it. A CCTV security system is a powerful addition to your home security system. However, you have to check the legality of your system. It is best to consult with a lawyer or at least get in touch with your local law enforcement department to ensure that all local, state, and federal requirements are met.

Your definitive guide to video surveillance equipment, security cameras and CCTV systems for home and business

2008-10-12T14:03:00.001-07:00

Choosing a form of video surveillance requires a lot of consideration and a familiarity with the types of security cameras and CCTV systems out there. But there is so much information out there. You probably don’t have the time or patience to sift through all the websites out there. What you need is a comprehensive guide to video surveillance, one that explains surveillance cameras and CCTV camera systems with your needs in mind.
Whether you are looking for home security and surveillance systems, security cameras for your business, wired systems, or wireless ones, you’ll find the product information you need here.
So much available in video surveillance
From covert hidden cameras to PC video surveillance to video surveillance software, there is truly a system out there for you. We’ve provided a definitive list of links (see our menu to the left) to the most popular, most cost-effective, and easiest to use security cameras and CCTV systems out there to keep your search for video surveillance organized and informative instead of overwhelming.
Click through our links today
This site will lead you to a boon of articles about closed circuit television systems, DVR surveillance, wireless home security systems, and night vision security cameras. Benefits of the systems are explained in an easy, readable format so you don’t have to dig for information.
You can explore the menu on the left with full confidence, knowing that this site was designed with you, the consumer in mind. Products are explained in order for you to better understand how something like whether you need a wireless or wired system or what exactly a DVR surveillance system does. Our in-depth articles will provide you with the facts you need to choose your video surveillance system.
Order your video security system from home or office
We list only the best online merchants so that you can order from the comfort and convenience of your own home or office. There will be no sales person trying to push you to purchase a more involved video surveillance product than you need. You will be armed with knowledge about video security systems and surveillance cameras after perusing our articles, so you’ll know what to search for when you check out the merchant sites.
Again -- this site is for you! The merchants we suggest and the products they carry are among the best on the market; else they would not be listed. Take some time today to understand video surveillance equipment and its many uses. As a parent, a homeowner, an employer, or someone who wants the peace of mind security cameras provide, you’ll find what you need.
The choice is yours. We’ve presented the information in the easiest, most user-friendly way. Now it’s up to you to discover the best video surveillance system for you.

CCTV camera systems protect your business

2008-10-12T14:02:00.000-07:00

CCTV camera systems (CCTV stands for closed circuit television) are quickly becoming an important aspect in security. All kinds of businesses stand to benefit from installing these camera systems in their stores and office buildings. You can’t be everywhere at once, but your closed circuit television can.
Wouldn’t you feel more secure knowing that if any unsavory activities were to occur in your office building or store that you could turn to your CCTV cameras and discover exactly what went on? Your employees would feel safer knowing that a theft deterrent is protecting their place of work. Not everyone can afford a security guard, but a CCTV camera system can be tailored to fit your budget.
Studies in England showed that these systems installed in areas susceptible to crime led to a reduction of 85% to 94% in crime rates. The cameras are small but their presence is powerful. Not only do they reduce crime, but through that crime reduction, customers and neighbors feel safer as well.
The benefits to the installation of CCTV systems are both numerous and practical, and include:
Reducing potentially insurance premiums upon installation
Increasing staff productivity
Identifying criminals
Monitoring areas you can’t
Deters theft, malicious mischief and vandalism
Constant and consistent surveillance 24 hours a day, every day
Black and white CCTV cameras are the most common and least expensive type of security camera. They have a better sensitivity to light as well. However, new technologies are making color cameras more light sensitive and less expensive. Because color images are more true to life, these cameras are becoming much more popular. The level of security you need will help you determine which kind of camera is right for you.
CCTV security systems are available for your indoor, outdoor, and even underwater surveillance needs, and one system can be expected to last at least five years. For a small amount of pocket change per day, you can protect your business and know that should anything happen, you can always rely on the evidence from your camera.
You’ve invested a lot in your business. Isn’t it time to secure that investment? It only takes a moment to peruse the types of CCTV cameras and systems available. Do it today for a safer tomorrow.

Wireless security cameras -- protection designed with you in mind

2008-10-12T14:01:00.000-07:00

Wireless security cameras are fast becoming the best option for security camera installation. Whereas once wired cameras were the only option, wireless security cameras present new options for your security needs. Your security matters and you deserve flexibility in the installation and use of your security camera.
Are you unsure of the differences between these two camera systems? Here is a quick rundown of the main advantages wireless security cameras have over wired:
Improved flexibility – A wireless camera can be moved to different locations while a wired camera is difficult to move once it is installed.
Temporary setup – The cost effectiveness of a wireless camera makes it ideal for a security situation that does not need constant monitoring, like a seasonal location such as a pool.
Appearance – If you want a security camera in your home, office, or store, a wireless camera, as the name suggests, gives you the security without all the wires running around your home for an inconspicuous and more attractive appearance.
Wireless security cameras come in many different sizes, which also helps make them a more viable security option. A small, discreet camera is more apt to record the normal activities than a large, hulking device for the simple fact that people act differently when they know they are being recording. If you want to know you’re getting the most accurate results from your security camera, a wireless security camera is for you.
Wireless security cameras are available in black and white or color, with color providing a more identifiable image. Improvements in camera technology have made a wireless color camera just as affordable a black and white one. Most cameras have a great range of up to 100 feet, so you will be getting feed from a sizable space with just one camera.
Are you thinking this is too technologically advanced for you? Relax! Here’s how the camera, from a provider such as X10, works:
Mount your camera where you need it most (indoors OR outdoors)
Plug it in (battery pack is also an option)
Plug your video receiver into a TV, VCR, or computer
Begin receiving live feed!
That’s all you have to do to install the X10 Xcam2 wireless color camera, which is just one of many wireless security cameras available.
You spend a lot of time making your home and office thriving, safe places. Spend just a couple minutes more to make these places even more secure. A great form of protection in the form of wireless security cameras are just a click away.

Cctv Camera System Captures You - Whether You Like It Or Not!

2008-10-12T14:00:00.000-07:00

So you want to know about CCTV camera systems, huh? By and large the most common uses of CCTV camera systems are in the areas of surveillance and security in the fields of commercial use, law and order, and of course, the military. Frankly, some types of investment into CCTV camera systems are probably more indulgent than others and are simply not warranted by the returns on those investments. There is a growing body of research in major cities around the developed world and these are uncovering some rather interesting conclusions about the use of CCTV camera systems in surveillance and the monitoring of incidental crime.
Is It Worth It? Obviously the most effective strategy in dealing with crime is prevention. Consequently, individuals or agencies have a vested interest in the prevention of criminal acts through the use of a deterrent. For many an investor or business owner, this is the rationale behind purchases of CCTV camera systems. These CCTV camera systems are utilized in many small to medium-sized businesses. But they may actually be better off finding other methods, as the cost-benefit analysis may not support the often hefty price tag.
Will It Stand in the Bad Guy's Way? Despite the ubiquitous presence of CCTV camera systems in shops, petrol stations, public places, street corners, and other similar establishments, incidents of violent crime and burglary continue to rise. While CCTV camera systems may well make it easier to identify criminals "in the act," it does not deter them from performing the dirty deed. It should also be noted that the low-picture quality of many CCTV camera systems also work in favor of the criminal element and further cast a gloomy light over reality, as opposed to the perceived value of investing in such a system.
Is There a Bad Guy Here? Many small businesses are showing increased interest in the use of CCTV camera systems within their businesses, ostensibly to safeguard the property from criminals at large, but also to safeguard the cash register from the possibility of so-called "inside jobs." Again, while these systems do not actively deter anyone from committing the crime, they do make it easier to apprehend the culprit.
Are They Watching the Right Way? Some small businesses have discovered a far more disturbing and insidious use for CCTV camera systems. It is becoming more and more common for some bosses to use CCTV camera systems to monitor their employees while they are working. This may seem to be a reasonably justified use, but there is a huge possibility that this facility will be abused and can hide behavior which could previously have been considered sexually deviant, if not predatory.
Take for example a small day spa business owned by a woman, staffed by women, but managed by the owner's husband - a hard-nosed, rotund, well-fed, alpha male type. Would you really fancy being watched all day via the in-house CCTV camera system by this guy? Sure, he tells his wife he's just keeping an eye on the girls. But he could be using the CCTV camera system to perversely watch not just the staff, but the female customers as well. Then again, he might not be. Still, if you are the customer, would you leave something like that to chance?
CCTV camera systems allow a big brother to watch us whenever and wherever, and this may well be a good thing. In this day and age, however, shouldn't Big Brother worry us as much as criminals do?